Import smoke volume into geometry nodes

Currently, if you create a smoke simulation, it seems that the only way to access the resulting volume within geometry nodes is to bake the simulation and import the cache as a VDB.

However, it would be much nicer if the volume could just be accessed within geometry nodes directly. Then you could process it however you want in real time, without having to get the simulation perfect and bake it first.

Ideally, this feature would be accessed simply by adding a geometry nodes modifier to the smoke domain. Currently, if you try to do that the group input just gives you the mesh of the bounding box.